kramdown(1) is a markdown parser by Thomas Leitner, which has a number of backends for generating HTML,
Latex, and markdown again.
kramdown-rfc2629 is an additional backend to that: it allows the generation of XML2RFC XML markup (also
known as RFC 2629 compliant markup), designed as a source format for documents in the Internet-Drafts (I-
Ds) and Request for Comments (RFC) series, to be processed by the xml2rfc utility.
If no file specified, STDIN will be used. If you are typing input, you can send an EOF by pressing ^D.